How do I make a control-able object?

Ok, so I go to the TDN, and look under the "How do I make a control-able object" and to my suprize, there is nothing there!!! why theres a link pointing to it, I'm not sure. But whatever,

so.... does any one know how to make a control-able object? or has a link to some thing that can teach you how to make a control-able object?